USPTO Patents Application 10758818

Serial No. 10/758,818

PD-200292

IN THE CLAIMS
Please amend claims 47-48 as follows:

1 . (PREVIOUSLY PRESENTED) A method of distributing program materials
received from a broadcast system between a host receiver and a client receiver for remote
decryption, comprising:

(a) receiving an encrypted media encryption key at the host receiver;

(b) decrypting the encrypted media encryption key at the host receiver;

(c) re-encrypting the decrypted media encryption key at the host receiver using a pairing key;

(d) transferring the re-encrypted media encryption key from the host receiver to the client
receiver, wherein the client receiver does not utikze a conditional access module (CAM);

(e) decrypting the re-encrypted media encryption key at the client receiver using the pairing

key;

(f) receiving encrypted program materials from the broadcast system at the host receiver;

(g) transferring the encrypted program materials from the host receiver to the client receiver;

and

(h) decrypting the encrypted program materials at the client receiver using the decrypted
media encryption key.

2. (ORIGINAL) The method of claim 1, further comprising decrypting the encrypted
program materials at the host receiver using the decrypted media encryption key.

3. (ORIGINAL) The method of claim 1, further comprising receiving the pairing key
from the broadcast system at both the host receiver and the client receiver.

4. (ORIGINAL) The method of claim 3, wherein the receiving step comprises:
receiving the pairing key from the broadcast system at the host receiver, wherein the pairing

key is encrypted; and

decrypting the pairing key at the host receiver using a receiver key uniquely associated with
the host receiver.

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5. (ORIGINAL) The method of claim 3, wherein the receiving step comprises:
receiving the pairing key at the client receiver, wherein the pairing key is encrypted; and
decrypting the pairing key at the client receiver using a receiver key uniquely associated with

the client receiver.

6. (ORIGINAL) The method of claim 5, further comprising:
receiving the pairing key from the broadcast system at the host receiver; and
transferring the pairing key from the host receiver to the client receiver.

7. (PREVIOUSLY PRESENTED) An apparatus for distributing program materials
received from a broadcast system between a host receiver and a client receiver for remote
decryption, comprising:

(a) means for receiving an encrypted media encryption key at the host receiver;

(b) means for decrypting the encrypted media encryption key at the host receiver;

(c) means for re-encrypting the decrypted media encryption key at the host receiver using a
pairing key;

(d) means for transferring the re-encrypted media encryption key from the host receiver to
the client receiver, wherein the client receiver does not utilize a conditional access module (CAM);

(e) means for decrypting the re-encrypted media encryption key at the client receiver using
the pairing key;

(f) means for receiving encrypted program materials from the broadcast system at the host
receiver;

(g) means for transferring the encrypted program materials from the host receiver to the
client receiver; and

(h) means for decrypting the encrypted program materials at the client receiver using the
decrypted media encryption key.

8. (ORIGINAL) The apparatus of claim 7, further comprising means for decrypting
the encrypted program materials at the host receiver using the decrypted media encryption key.

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9. (ORIGINAL) The apparatus of claim 7, further comprising means for receiving the
pairing key from the broadcast system at both the host receiver and the client receiver.

10. (ORIGINAL) The apparatus of claim 9, wherein the means for receiving comprises:
means for receiving the pairing key from the broadcast system at the host receiver, wherein

the pairing key is encrypted; and

means for decrypting the pairing key at the host receiver using a receiver key uniquely
associated with the host receiver.

11. (ORIGINAL) The apparatus of claim 9, wherein the means for receiving comprises:
means for receiving the pairing key at the client receiver, wherein the pairing key is

encrypted; and

means for decrypting the pairing key at the client receiver using a receiver key uniquely
associated with the client receiver.

12. (ORIGINAL) The apparatus of claim 11, further comprising:

means for receiving the pairing key from the broadcast system at the host receiver; and
means for transferring the pairing key from the host receiver to the client receiver.

1 3 . (PREVIOUSLY PRESENTED) A method of distributing program materials
received from a broadcast system between a host receiver and a client receiver for remote
decryption, comprising:

(a) receiving an encrypted media encryption key at a conditional access module associated
with the host receiver;

(b) decrypting the encrypted media encryption key at the conditional access module;

(c) re-encrypting the decrypted media encryption key at the conditional access module using
a first pairing key shared between the conditional access module and the host receiver;

(d) transferring the re-encrypted media encryption key from the conditional access module
to the host receiver;

(e) receiving the re-encrypted media encryption key at the host receiver from the conditional
access module;

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(f) decrypting die re-encrypted media encryption key at the host receiver using the first
pairing key shared between the conditional access module and host receiver;

(g) re-encrypting the decrypted media encryption key at the host receiver using a second
pairing key shared between the host receiver and the client receiver, wherein the client receiver does
not utilize a conditional access module (CAM);

(h) transferring the re-encrypted media encryption key from the host receiver to the client
receiver; and

(i) decrypting the re-encrypted media encryption key at the client receiver using the second
pairing key shared between the host receiver and the client receiver;

(j) receiving encrypted program materials from the broadcast system at the host receiver;
(k) transferring encrypted program materials from the host receiver to the client receiver;

and

(1) decrypting the encrypted program materials at the client receiver using the decrypted
media encryption key.

14. (ORIGINAL) The method of claim 13, further comprising decrypting the encrypted
program materials received from the broadcast system at the host receiver using the decrypted media
encryption key.

15. (ORIGINAL) The method of claim 13, further comprising receiving the first pairing
key from the broadcast system at both the host receiver and the conditional access module.

16. (ORIGINAL) The method of claim 15, wherein the receiving step comprises:
receiving the first pairing key from the broadcast system at the host receiver, wherein the

first pairing key is encrypted; and

decrypting the first pairing key at the host receiver using a receiver key uniquely associated
with the host receiver.

17. (ORIGINAL) The method of claim 15, wherein the receiving step comprises:
receiving the first pairing key from the broadcast system at the conditional access module;

and

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decrypting the first pairing key at the conditional access module.

18. (ORIGINAL) The method of claim 1 3, further comprising receiving the second
pairing key from the broadcast system at both the host receiver and the client receiver.

19. (ORIGINAL) The method of claim 18, wherein the receiving step comprises:
receiving the second pairing key from the broadcast system at the host receiver, wherein the

second pairing key is encrypted; and

decrypting the second pairing key at the host receiver using a receiver key uniquely
associated with the host receiver.

20. (ORIGINAL) The method of claim 18, wherein the receiving step comprises:
receiving the second pairing key at the client receiver, wherein the second pairing key is

encrypted; and

decrypting the second pairing key at the client receiver using a receiver key uniquely
associated with the client receiver.

21. (ORIGINAL) The method of claim 20, further comprising:

receiving the second pairing key from the broadcast system at the host receiver; and
transferring the second pairing key from the host receiver to the client receiver.

22. (PREVIOUSLY PRESENTED) An apparatus for distributing program materials
received from a broadcast system between a host receiver and a client receiver for remote
decryption, comprising:

(a) means for receiving an encrypted media encryption key at a conditional access module
associated with the host receiver;

(b) means for decrypting the encrypted media encryption key at the conditional access
module;

(c) means for re-encrypting the decrypted media encryption key at the conditional access
module using a first pairing key shared between the conditional access module and the host receiver;

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(d) means for transferring the re-encrypted media encryption key from the conditional access
module to the host receiver;

(e) means for receiving the re-encrypted media encryption key at the host receiver from the
conditional access module;

(f) means for decrypting the re-encrypted media encryption key at the host receiver using the
first pairing key shared between the conditional access module and host receiver;

(g) means for re-encrypting the decrypted media encryption key at the host receiver using a
second pairing key shared between the host receiver and the client receiver, wherein the client
receiver does not utili2e a conditional access module (CAM);

(h) means for transferring the re-encrypted media encryption key from the host receiver to
the client receiver; and

(i) means for decrypting the re-encrypted media encryption key at the client receiver using
the second pairing key shared between the host receiver and the client receiver;

0 means for receiving encrypted program materials from the broadcast system at the host
receiver;

(k) means for transferring encrypted program materials from the host receiver to the client
receiver; and

Q means for decrypting the encrypted program materials at the client receiver using the
decrypted media encryption key.

23. (ORIGINAL) The apparatus of claim 22, further comprising means for decrypting
the encrypted program materials received from the broadcast system at the host receiver using the
decrypted media encryption key.

24. (ORIGINAL) The apparatus of claim 22, further comprising means for receiving
the first pairing key from the broadcast system at both the host receiver and the conditional access
module.

25. (ORIGINAL) The apparatus of claim 24, wherein the means for receiving
comprises:

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means for receiving the first pairing key from the broadcast system at the host receiver,
wherein the first pairing key is encrypted; and

means for decrypting the first pairing key at the host receiver using a receiver key uniquely
associated with the host receiver.

26. (ORIGINAL) The apparatus of claim 24, wherein the means for receiving
comprises:

means for receiving the first pairing key from the broadcast system at the conditional access
module; and

means for decrypting the first pairing key at the conditional access module.

27. (ORIGINAL) The apparatus of claim 22, further comprising means for receiving
the second pairing key from the broadcast system at both the host receiver and the client receiver.

28. (ORIGINAL) The apparatus of claim 27, wherein the means for receiving
comprises:

means for receiving the second pairing key from the broadcast system at the host receiver,
wherein the second pairing key is encrypted; and

means for decrypting the second pairing key at the host receiver using a receiver key
uniquely associated with the host receiver.

29. (ORIGINAL) The apparatus of claim 27, wherein the means for receiving
comprises:

means for receiving the second pairing key at the client receiver, wherein the second pairing
key is encrypted; and

means for decrypting the second pairing key at the client receiver using a receiver key
uniquely associated with the client receiver.

30. (ORIGINAL) The apparatus of claim 29, further comprising:

means for receiving the second pairing key from the broadcast system at the host receiver;

and

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means for transferring the second pairing key from the host receiver to the client receiver.

3 1 . (PREVIOUSLY PRESENTED) A method of distributing program materials
received from a broadcast system between a host and client receiver for remote decryption,
comprising:

(a) receiving an encrypted media encryption key at a conditional access module associated
with the host receiver;

(b) decrypting the encrypted media encryption key at the conditional access module;

(c) re-encrypting the decrypted media encryption key at the conditional access module using
a pairing key shared between the conditional access module and the client receiver, wherein the
client receiver does not utili2e a conditional access module (CAM);

(d) transferring the re-encrypted media encryption key from the conditional access module
to the client receiver;

(e) decrypting the re-encrypted media encryption key at the client receiver using the pairing
key shared between the conditional access module and client receiver;

(f) receiving encrypted program materials from the broadcast system at the host receiver;

(g) transferring encrypted program materials from the host receiver to the client receiver; and

(h) decrypting the encrypted program materials at the client receiver using the decrypted
media encryption key.

32. (ORIGINAL) The method of claim 31, further comprising receiving the pairing key
from the broadcast system at both the conditional access module and the client receiver.

33. (ORIGINAL) The method of claim 32, wherein the receiving step comprises:
receiving the pairing key from the broadcast system at the conditional access module,

wherein the pairing key is encrypted; and

decrypting the pairing key at the conditional access module.

34. (ORIGINAL) The method of claim 32, wherein the receiving step comprises:
receiving the pairing key at the client receiver, wherein the pairing key is encrypted; and

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decrypting the pairing key at the client receiver using a receiver key uniquely associated with
the client receiver.

35. (ORIGINAL) The method of claim 34, further comprising:
receiving the pairing key at the conditional access module; and

transferring the pairing key from the conditional access module to the client receiver.

36. (ORIGINAL) The method of claim 31, wherein the transferring step comprises:
transferring the re-encrypted media encryption key from the conditional access module to

the host receiver;

receiving the re-encrypted media encryption key from the conditional access module at the
host receiver; and

transferring the re-encrypted media encrypted key from the host receiver to the client
receiver.

37. (ORIGINAL) The method of claim 36, further comprising

decrypting the re-encrypted media encryption key at the host receiver using a pairing key
shared between the conditional access module and the host receiver, wherein the pairing key shared
between the conditional access module and the host receiver is the same as the pairing key shared
between the conditional access module and the client receiver; and

decrypting the encrypted program materials at the host receiver using the decrypted media
encryption key.

38. (PREVIOUSLY PRESENTED) An apparatus for distributing program materials
received from a broadcast system between a host and client receiver for remote decryption,
comprising:

(a) means for receiving an encrypted media encryption key at a conditional access module
associated with the host receiver;

(b) means for decrypting the encrypted media encryption key at the conditional access
module;

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(c) means for re-encrypting the decrypted media encryption key at the conditional access
module using a pairing key shared between the conditional access module and the client receiver,
wherein the client receiver does not utilize a conditional access module (CAM);

(d) means for transferring the re-encrypted media encryption key from the conditional access
module to the client receiver;

(e) means for decrypting the re-encrypted media encryption key at the client receiver using
the pairing key shared between the conditional access module and client receiver;

(f) means for receiving encrypted program materials from the broadcast system at the host
receiver;

(g) means for transferring encrypted program materials from the host receiver to the client
receiver; and

(h) means for decrypting the encrypted program materials at the client receiver using the
decrypted media encryption key.

39. (ORIGINAL) The apparatus of claim 38, further comprising means for receiving
the pairing key from the broadcast system at both the conditional access module and the client
receiver.

40. (ORIGINAL) The apparatus of claim 39, wherein the means for receiving
comprises:

means for receiving the pairing key from the broadcast system at the conditional access
module, wherein the pairing key is encrypted; and

means for decrypting the pairing key at the conditional access module.

41 . (ORIGINAL) The apparatus of claim 39, wherein the means for receiving
comprises:

means for receiving the pairing key at the client receiver, wherein the pairing key is
encrypted; and

means for decrypting the pairing key at the client receiver using a receiver key uniquely
associated with the client receiver.

Serial No. 10/758,818

PD-200292

42. (ORIGINAL) The apparatus of claim 41, further comprising:

means for receiving the pairing key at the conditional access module; and

means for transferring the pairing key from the conditional access module to the client

43. (ORIGINAL) The apparatus of claim 38, wherein the means for transferring
comprises:

means for transferring the re-encrypted media encryption key from the conditional access
module to the host receiver;

means for receiving the re-encrypted media encryption key from the conditional access
module at the host receiver; and

means for transferring the re-encrypted media encrypted key from the host receiver to the
client receiver.

44. (ORIGINAL) The apparatus of claim 43, further comprising

means for decrypting the re-encrypted media encryption key at the host receiver using a
pairing key shared between the conditional access module and the host receiver, wherein the pairing
key shared between the conditional access module and the host receiver is the same as the pairing
key shared between the conditional access module and the client receiver; and

means for decrypting the encrypted program materials at the host receiver using the
decrypted media encryption key.

45. (PREVIOUSLY PRESENTED) The method of claim 1 wherein the client receiver
does not comprise a tuner.

46. (PREVIOUSLY PRESENTED) The apparatus of claim 7 wherein the client
receiver does not comprise a tuner.

47 . (CURRENTLY AMENDED) The method of claim 4-45_wherein the host receiver
utilizes a conditional access module (CAM).

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48. (CURRENTLY AMENDED) The apparatus of claim 3-46wherein the host
receiver utilizes a conditional access module (CAM).

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